Package forming machine



| L. SAL-FISBERG 2,103,339

PACKAGE FORMING MACHINE Dec. 28, 1937.

Filed Aug. 21, 1956' 5 Sheets-Sheet 1 4W INVENTOR.

' .ElCIH Lfialfisherg Dec. 28, 1937. L. 1.. SALFISBERG PACKAGE FORMING MACHINE Fil'd Au g. 21, 1936 5 Sheets-Sheet 2 INVENTOR. Lerng Lfialfisherg' WNW ATTORNEY.

Dec. 28, 1937. L, SALFISBERG 2,103,339

PACKAGE FORMING MACHINE a1 isharg U Dec. 28, 1937. 1 L. SALFJSBERG PACKAGE FORMING MACHINE 5 Sheets-Sheet 4 Filed Aug. 21, 1956 INVENTOR.

LEW-DH L. Salfisberg ATTORNE 5 sheets-sheath Filed Aug. 21, 1936 L. SALFISBERG PACKAGE FORMING MACHINE Dec. 28, 1-937.

. m I E A mw m L a H m 2: M w A ai- Patented Dec. 28, 1931 UNITED .STATES PATENT OFFICE PACKAGE FORMING MACHINE Leroy L. Saliisberg, South Orange, N. 1., assign: to Wrap-Ade Machine Company, Inc., Newark, N. J.-, a corporation of Delaware Application August 21, 1936, Serial No. 97,104

My invention pertains in general to packaging equipment, and specifically relates to, a form-of combined automatic and manually operated package enclosure forming mechanism.

The principal object of my invention is to provide a machine organization for the fabrication of envelope enclosure structures suitable for packaging commodity articles and preferably, but not exclusively, composed cellulose materials.

A further object consists in providing a machine with adjustable parts that will permit the fabrication of package enclosures of varying dimensions of width and length. v

Another object is to provide a correlated combination of automatic and manually operating units, each independent of the other in its specific operation but cooperating to provide the.

rapid and continuous production closures.

A further object is to provide a machine for producing package enclosures and having means for incorporating insert strips in the edges of of package enthe package structure to effect a reenforcement of the edges of the enclosure and also to give an ornamental and more attractive appearance to the" package.

These and other objects reside in a construction of a package enclosure forming machine Fig. 4 is a fragmentary top plan view, partly in section, taken along line 4-4 of Fig. 2;

' ture produced by the machine of this invention;

and

of regenerated.

Fig. 8 is a plan view of an-individual package enclosure severed along the line Y-Y of Fig. 7.

This invention contemplates the'production of packaging enclosures of envelope formation. These enclosures are of a continuous, flat, tubelike structure preferably composed of various superimposed layers of transparent regenerated cellulose material having a heat treatment coating thereon. In accordance with one aspect of the invention, additional strips of colored cellulose material are'incorporated in the marginal edgesof the packaging enclosure.

In fabricating the package structure, the edges of superimposed layers of the packaging material are subjected to a pressure, heating and crimping. process which bonds and 'seals the edges in a rapid and continuous automatic operation, producing an envelope package structure -that is transparent, sanitary and moisture proof. The machine organization to produce this packaging enclosure structure is designed with adjustable parts so that varying sizes of packages can be produced by minor adjustments. The mechanism is partly automatic and partly manually operated and is so designed that intermittent operation of the manually operated part does not necessitate an interruption in the continuous operation of the automatic part. The automatic structures of desired lengths, there will be an accumulated surplus of the flat tubular structure produced by the continuously operated automatic part of the mechanism. This accumulation from the continuously operated part of the mechanism is accommodated by an intermediate storing arrangement.

Referring to the drawings in detail and particularly to Fig. 1, there is provided a general mounting structure l2, having two reels 2 and 4 associated therewith and mounted on spindles carried by parts of the general mounting structure not shown. These reels are provided with central cores upon which rolls of packaging material are respectively stowed for rotatable feeding purposes. The packaging material so provided is preferably of transparent strip or ribbonformation and is of a composition such as regenerated cellulose,

with a heat treatment coatingthereon, although other material may be employed. Extending from the rolls of packaging material, mounted on These leader strips I and 3 extend centrally of themounting structure in directions toward each other and pass over loose sleeve idler rollers 5 and I4 mounted on shafts I and I5, Figs. 1 and 5. and thence feed into the heating and sealing equipment described in more detail later.

Also positioned on parts of the general mounting structure ii, are two reels 6 and 8, upon which are stowed rolls of narrow strips of colored packaging material. These reels are positioned so that the outside edges of leader insert strips and 7, Fig. 5, will travel under and in alignment with the outside edges of the bottom packaging strip I and over idler roller I4. Thus, when the extending marginal edges of the strip I are folded over the edges of strip 3, one half of the width of the colored strips are at the same time folded over on top of the folded-over edges of the bottom strip I. Thus the colored strips form a U-shaped binder for the outside edges of the combined strips I and 3. It will be understood that the use of the insert strips 5 and 1 is optional, and that the enclosure structure may be fabricated with these strips omitted.

The folding-over process is effected when the edges of the strip and the colored insert strips 5 and I come in contact with pin members I8 and 22, Fig. 5, as the strips are fed from the reels to the crimping rollers. The pin members I8 and 22 are movably secured to shaft I9 which in turn is mounted in part'of the general mounting structure I 2. There is provided a corrugated roller 23, mounted in hearings in the general mounting structure, the purpose of which is to straighten the packaging material and prevent wrinkling and buckling of the same before feeding to the crimping rollers. On this corrugated roller, there are provided two guide members 29 and 30, adjustably secured to the roller in position on either side of the edges of the packaging strips to properly guide the turned-over edges into the edge crimping rollers. These guide members aremovable to provide for varying widths of packaging materials. There are also provided on the corrugated roller 23 ,two collar members 26 and 21, secured to the roller to maintain the same in a fixed lateral position.

In Figs. 1 and 5 is illustrated the arrangement of the heating and crimping rollers through which the several combined packaging materials are passed whereby the marginal edges thereof are subjected to a heated pressure and crimping process to produce the tubular packaging structure. There are provided two sets of these crimping rollers 3| and 32, 33 and 34, the peripheral surfaces of which are serrated, these serrations being spaced in multiples relative to the pitch of spur gears 39-40 and so arranged that the indentations of the surfaces of the lower and upper rollers of each set mesh into each other to effect a crimping of the edges of the packaging material. The two rollers 3| and 33 are adjustably secured to the shaft 38, and laterally positioned to contact the turned-over edges of the packaging strips. The rollers 32 and 34, are secured to shaft 35 in a similar manner.

The roller shafts 35 and 38 are hollow to allow gear 49, driving gear 50 being keyed to shaft for heating cartridges 4| and 43, Fig. 1, which supply heat to the rollers. These heating cartridges are provided with electric terminals 42 and 46, Fig. 5, to provide current for heating purposes.

The crimping rollersare rotated through' the gear 39 on shaft 38, Figs. 1 and 5, which meshes with gear 40 keyed on shaft 35. These gears are rotatably driven by a gear 48 keyed to the end of shaft 38, Fig. 1, which gear in turn is driven by driving gear 50, Fig. 1, through the intermediate' 5i aligned with the driving shaft of a motor, 56, Fig. 5. Clutch members 52 are provided to selectively connect and disconnectthe motor from the train of driving gears. The driving clutch member is controlled by pin member 54 mounted on pivoted member 53, Fig. 5, and operable by a hand lever member 55.

To allow for the movement of the set of crimping rollers 32 and 34, so as to thread and make adjustments of the packaging strips with respect to the rollers, there is provided a pair of movable blocks 60 which carry the crimping roller shaft 35; Fig. 1. These frame BI secured to bosses 62 at opposite sides of the frame I2. The frame blocks 60 are provided with extension members 63 which may be actuated by an eccentric roller member 64 mounted in suitable blocks rotate on pivots 5 hearings in the frame I 2. This eccentric roller when rotated by the hand lever 68, Fig. 5, de-

presses the extension members 63 thereby causing the crimping rollers 32 and 34 to disengage from the lower rollers allowing for threading and adjustment of the packaging strips between the rollers. After this threading orv adjustment is completed, the hand lever 58 can be operated to rotate the eccentric roller 54 back to its normal position whereby the movable set of crimping rollers are forced into engagement with the other rollers through the action of springs 66, Fig. 1. To regulate the force exerted by the upper rollers on the packagingstrip, there is provided a set screw 6'! for adjusting spring 66.

As shown in Figs. 1 and 5, there is provided a,

floating, or tensioning sleeve roller 70 loosely fitted on a shaft II. Pinion gears 12 are keyed to the ends of shaft II. These gears mesh into upright toothed rack members 73 and 81. The

extended ends of the shaft H rotate in contact with upright guide members I4 and 88. The purpose of this floating roller 10 is to take up the slack of the packaging material moving continuously from the crimping rollers. This slack accumulates when the hand operated mechanism is operated to seal ,a portion of the package structure.

The roller 10 operates in a. vertical plane, and is prevented from tilting or slipping from its horizontal position by the two end gears mesh- 1113 with the toothed rack members 13 and 81. The engagement of the gears 12 and 85 with the racks l3 and 81 is maintained by the upright members I4 and 88.

From the floating roller 10, the tubular packaging structure with the marginal edges previously crimped and sealed, carried over the idler roller I6, Figs. 4 and 1. s roller is mounted on shaft H, the ends of which are journaled in frame I2. On the roller I6 are adjustably securedguide collar members 18 and 85. These members serve to keep the packaging material enclosure in proper alignment. in feeding 'into succeeding rollers 79 and 82. As shown in Fig. 1,

theroller. I9 is mounted on a shaft-80 and is Gil amazon .traction so that when the roller is rotated by hand wheel 84,'the packaging strip from the floating roller 10 can be advanced through the rollers 19 and 82 intojthe end-crimping and cutting device. As shown in Figs. 2, 3 and 6, there are provided crimping bar members 94 and 95, the opposing sides being serrated or fluted. These members form part of the manually operated mechanism to crimp and seal the ends of previously formed tubular packaging enclosure. The members 84 and 95 are-hollow for accommodating heating cartridges96 and 91, Figs. 2, 4 and 6, which have suitable electric'terminal connections to supply current for heating purposes.

Referring to Fig. 6, the manually operated mechanism also. includes gripper block members 92 and 93' constructed of hard wood, or phenol condensation products. These gripper block members, manually operated, serve to hold the packaging enclosure strip ill securely while the end of the strip is being crlmped and sealed and severed to a predetermined length. The gripper block members 92 and 93, as well as the crimping bar members 94 and 95 and the severing knife 98, are all inter-connected parts of a mechanism, operated manually. which is supported by and'functions ireely'within a frame work,

consisting of four upright members II, I52, I53, and I54, bolted'to a bed plate I21 on the general mounting frame I2. A cross bar member I55 sit is supported and bolted to these upright members. On top of the cross bar I55, there is provided U-shaped member I38. Fig. 6. To a'the flanges of the U-shaped member I38, two bar members I39 and HI, Figs. 2 and 3, extending there is provided at either end of'the member. guiding rollers I02 and I83, respectively. which contact the uprights I52 and I54, thereby maintaining the crimping bar mechanism in a proper lateral position within theco'nflnes of the framework. As seen in Fig. 2, there is provided a cross-bar member I34 having a cylinder well is secured to the cross bar member I55 by the threaded portion I36. Between the under side of the piston head I85 and the bottom of the cylinder well, there is provided a compression spring I21. The cross-bar-member I34 is provided with bolts I69 and I having a running fit through holes in the cross member I55.

Referring to Fig. 2, the upper ends of members I05 and I08 are separated by a spacer washer I and pivoted to the extending ears II I of cross-bar member I 84 by the pivot pin I I8. The lower ends of pressure members I05 and I08 are pivoted, to the lever member H5, and link members HI and 8 I12 by the pivot pin I20. The upper ends of pressure members I01 and I09 are likewise pivoted to the lever bar H6 and link members "I and I12 by the pivot pin I while the lower ends of pressure members I01 and I09 are pivoted to the bar H3 by the pivot pin H9. The lever member II5, Fig. 2, is pivoted to an actuating lever member I58 by the pin I51; Lever member I50 is in turn pivotally supported by pin I59 held between provided with piston head I35. This piston head a pair of bosses I integral with the bed plate I21.

in opposite directions, are'pivotally secured by pins I40 and I42. The offset ends of members I39 and I4! are provided with bolt members I43 and I45, Fig. "3, extending downward and connect by pin members I44 and I45, Fig. 2,. with the ends of the knife member 98. As shown in Figs. 2 and 6, there is provided a cross bar member II3 connected "to the upper crimping bar 94. Between these two members there are provided layers I00 'of heat insulatingmaterial, preferably sheetasbe'stos. Between the lower crimping-bar 95 and the bed plate I21, layers; I0ly'are similarly provided.

To operate the crimping bar, gripper blockand severing knife members described, above, there is provided a manually operated toggle mechanism consisting of four sets of members I02 to I09 inelusive, pivotedto thrust bar members, and operated through a suitable foot pedal.

Referring to Figs. 2 and 6.,there are provided pressure members I02 and I0 4, the upper ends of which are separated by a spacer washer I14 and lower ends of these pressure members I02 and I04 are separated by a spacer washer I13 and pivoted to thrust bar link members HI and I12 by a pivot pin I I 1. There are also provided pressure members I03 and I05, the upper ends of which .re likewise pivoted to link members HI and I12 by the pivot pin. I I1.. The lower ends of these members I03 and I05 are pivoted to a bar member II3 by the pivot pin H4. .The bar member H3 is secured by suitable screws with the crimping bar member 94. To prevent lateral displacement of the bar member I I3 during its vertical motion.

The .lower endof this lever I58 is connected/ with a foot treadle I50, Fig. 1. When this foot treadle is depressed by the operator, the lever member II5 causes the pressure members I02- 0 preformed packaging enclosure strip into a unit of predetermined length. The link member I1I has an extension I1Ia which contacts the upright I5I at the limit of movement of the toggle pressure members to a vertical position.

The foregoing operations in part are controlled through spring mechanisms illustrated in' Figs. 2 and 6: In Fig. 2, there are provided two bar members I28 and I 29 the ends of which are loosely. mounted on pin members I25 and I26 which are screwed into the bed plate I21. Between the ends of the upper and lower bar members I28 and I29, the pin members I25 and I26 are encircled by two short helical compression springs I2I and I23. Between the ends of bar member I29 and the bed plate I21 are'two longer springs I22' and I24 of less rigidity and similarly mounted on pins I25,

and I25. 0n the opposite side-of the'pressure mechanism, as best seen in Figs. 4 and '6, two short springs I64 and I65 are mounted on pins I3I and I33, which are screwed to the bed plate I21.

The upper ends of springs I64 and I65 contact withthe under side of a plate I41, Fig. 6, and the lower ends contact with a plate I48, these plates being secured to the top side of the upper gripper block 92 and the bottom side of the lower. gripper block 93, respectively.

The plate I41 is in contact with a cross bar member I65 mounted on pin members II 4 and "9, Figs. 4 and6. The opposite ends ofpin .I3I and I33, and bear upon the upper ends of springs I64 and I65; the vertical upward movement being limited by an adjusting nut I3 I a. The under side of gripper block 93, Fig. 6, has secured thereto a plate I48, the ends of which are loosely fitted over the spring pin members I3I and I33. There are also provided two longer springs I36, of greater rigidity than springs I64, I65, mounted respectively on rods |3I and I33. The springs ex-' I tend between plate I48 and bed plate I21.

As seen in Fig. 6, a. shelf member I61 is bolted to the bed plate I21 and is aligned with an ex-,

strips of packaging materials are fed from the reels, over the idler rollers and past the pin members which initially turnover the edges of the strips to form binding marginal edges. The consolidated strips then pass over the intermediate directing roller 23 which completes the turning of the edges. The strips of material then feed through the heated crimping rollers 3 I-34 which crimp and seal the .turned over edges to form a continuous tubular shaped package enclosure structure. This tubular structure is then fed beneath the floating roller 10 which takes up the surplus slack in the strip that accumulates from the continuously operated edged crimping rollers when the subsequently manually operated mechanism is operated intermittently.

From the floating roller, the tubular package structure passes over idler roller 16 to pass between the manually operated rollers 19 and 82, Fig. 1. These rollers serve to effect the manual feeding of the preformed tubular packaging structure 9| through the space intermediate the gripper blocks 92 and 93, Fig. 6, into a position between the upper and lower crimping members 94 and 95, as controlled by the manually operated wheel 84. After the packaging structure 9| has been manually extended to a desired length, the manually operated gripping bars, crimping members and severing knife are actuated in sequence through force exerted on foot treadle I56.

The foot treadle I56 causes the connecting thrust bar II6 to move toward the rightasseen in Fig. 2, thus causing the toggle members to" straighten out and assume a perpendicular position. In assuming this perpendicular position, there are several separate and distinct operations performed. At the initial movement of the thrust bar 6, the lower ends of the members I02-|69 exert a force through pins H4 and H9 member 94 is depressed to engage the structure.

9|. As the thrust bar member IIB continues its right hand movement, the toggle members exert an increasing force on the gripper block members and the upper crimping bar. as well as the cross bar members I29 and I29, Fig. 6. further depressing the springs I22, I24, I30 and I32. The upper and lower crimping bar members 94 and 95 now come into close contact and crimp the end of the structure 9| under heat and pressure. In this step, the impact of the two crimping bar members is cushioned to a certain extent by the layers I 06 and I III. When the crimping bar members are in contact, the bar member I29, Figs. 2 and 6, is in contact with the shelf member I61 through the compression of the springs I24 and I22, thus offering resistance to any further downward movement caused by the action of the thrust bar II 6 on the toggle members. As the thrust bar member ,6 continues its action on the toggle members I02 I69 and the downward movement of bar H3 is arrested, the upper ends of the toggle members act to cause an upward movement of the cross-bar member I34, Fig. 2. As this movement continues, the bolts I69 and I10, Fig. 2, secured to the member I34, come into contact and exert an upward pressure against the bars I39 and MI. The outer ends of these bars are connected with the ends of the shearing knife 98. Thus it will be seen that the force of the bolts I69 and I19 acting upon the tension bar members I39 and HI causes an upward movement in the knife connecting rods I43 and I45, raising the knife 96 adjacent the crimping bar 95, Figs. 2 and 6, to contact and sever the package structure 9|. All of these progressive and successive operations of the manually controlled mechanism are effected through a single operation of a foot treadle' I56, Fig. 1.

Fig. 7 shows the packaging material strips as they are incorporated in the enclosure structure. In the particular embodiment here illustrated, the bottom or wider strip of material I has its marginal areas folded over the top or narrower packaging strip 3. The color strips and;1 are folded over the edges of the package structure and'not only impart an ornamental appearance to the package structure, but serve to reenforce the edges of the package structure. It will be understood, of course, that various changes and modifications of the arrangement and use of the packaging strips can be made without departing from thescope of the invention. This much of the package structure constitutes the tubular formation which is fabricated on the automatic and continuously operated portion of the mechanism. As this preformed tubular structure is fed to the manually operated portion of the mechanism, selected lengths of thestructure are trans versely sealed at I6I along the areas "a" and severed to form envelope structures. For example, in Fig. '7 the tubular structure is severed along the line YY to form an open-end envelope as shown in Fig. 8. This envelope may be filled, as required, with a: desired commodity.

In the operation of the equipment to form envelope structures, it will be noted that the transverse seal of one envelope is produced at the time that theenvelope formed by the previous transverse seal is severed. The structure of this form' of package structure itself forms the subject matter of copending application Serial No. 47.549 filed October 31, 1935.

It will now be apparent that the foregoing ma.--

will be apparent that changes can be made therein without departing from the intended scope of my invention. I therefore do not desire to limit myself to the foregoing except as may be 'pointed out in' the appended claims.

What I claim as new and original, and desire to secure by United States Letters Patent is as follows:

1. A package forming machine comprising,

means for feeding plural layers of ribbon packag- ,ing material, .roller means for crimping said layers upon both sides to close the edges thereof for forming a. continuous tube-like packaging structure, a motor for continuously driving said roller means, intermittent means for forming said tube-likestructure into envelopes, saidintermittent means comprising crimping and severing means for intermittently transversely crimping and severing said tube-like structure in predetermined lengths, and feeding means for feeding said tube-like structure from said roller means to said intermittent means.

2. A machine in accordance with claim 1 in which said feeding means comprises, atake-up arrangement accommodating an accumulation of said tube-like structure from said continuously operated roller means. during the intermittent operation of said intermittent means.

3. A machine in accordance with claim 1 in which said roller means comprises a plurality of axially aligned independently movable crimping rollers for .operating on layers of said material of various selected widths.

4. A machine in accordance with claim 1 in which said intermittent means includes clamping means for holding said tube-like structure stationary during severing and crimping operations, said means being efiectively operable prior to said crimping and severing operations.

5. A machine in accordance with claim 1 in which said feeding means comprises an idler roller and pinions carried thereby, and racks with which said pinions mesh, said idler roller being adapted for free movement along said racks to hold taut varying lengthsof said tube-like structure accumulated due to the intermittent operation of said intermittent means.

J 6. A machine in accordance with claim 1 in which said roller means comprises a pair of shafts intergeared with said motor, heater means within said shafts, and crimping elements carried on said shafts and axially adjustable thereon to accomodate various'widths of said material.

7. A machine in accordance with claim 1 in which said intermittent means include clamping means, crimping means, severing means, and unitary means for operating the foregoing in successive order to clamp said tube-like structure, transversely crimp the same and to transversely sever the same.

8. A machine in accordance with claim, 1' in which said intermittentmeans includes a pluorder to clamp, crimp and sever said tube-likev structure, and in which/said feeding means comprises an arrangement for accommodating an accumulation of said tube-like structure from said 75 continuously driven roller means during the time the movement of said tube-like structure is arrested by said clamping means.

ture and' carrying internal heating elements,

crimping rollers carried on said shafts, means for guiding said layers of material between said rollers whereby said rollers heat and forcibly inter 20 digitate the marginal edges of said layers to form a continuous tube-like structure, a motor driving means for continuously rotating said shafts to cause the continuous formation of said tube-like structure, a mechanically operable feeding means 2 comprising, a pair of complementary friction rollers through which said tube-like structure passes, equipment for operating on said tube-like structure fed through said last mentioned rollers, said equipment including reciprocatively operated 30 clamping means, reciprocatively operated sealing means, and severing means, manually operated actuating means for causing the sequential operation of the elements of said equipment to clamp-,-

seal and sever selected lengths of said tube-like 35.

structure in the order mentioned, and a take-up device positioned between said crimpingrollers and said friction operated rollers, said take-up device being adapted to accommodate an accumulation of said tube-like structure from said 40 crimping rollers while'the movement of said tubelike structure is arrested while being operated upon by said equipment. l2. Amachine in accordance withciaim 11 including a pivoted support for one of'said shafts, 45

-and a cam for moving said support to engage and disengage said clamping rollers to permit the threading therethrough of said layers of material.

g 13. A machine in accordance with claim 11 in which said equipment includes a reciprocative 50 guide structure, said clamping means including clamping blocks movably mounted in said structure for engagement with a. complementary clamping block mounting stationary in said structure, said severing means comprising a knife ele- 55 ment reciprocatively suspended in such structure,

and said crimping means including a block member movably mounted in said structure for engagement with a complementary block member, said actuating means comprising a mechanical movement for effectively sequentially imparting effective operating movement to said clamping block; said crimping block, and said knife element.

14. The machine in accordance with claim 11 5 in which said layers of material are of unequal width and including means for bending over the edges of both sides of the layer of greatest width to overlap the face of the layer of narrowest width before feeding through said crimping rollers. 15. A package forming machine comprising means for continuously feeding superimposed layers of packaging material while sealing together selected areas of said superimposed layers in a continuous process, equipment subject to intermittent operation and arresting the movement of said sealed layers oHnaterial as fed from said last mentioned means, said equipment including means for further sealing said layers 01' material, 'and means intermediate said first mentioned means and said equipment for maintaining tension on said layers of material between said first mentioned means and said equipment while accommodatingih accumulation or said' material from said continuously operated first mentioned means during the interruption of the movement oi said material through said equipment; 4

16. A package forming machine comprising;

transversely interdigitating said selected tubular structure at selected points, and means for severing said transversely interdigitated tubular structure at points adjacent said transverse interdigitation to produce, from saidtubular structure, open mouthed bags having closed and double ree'nforced side walls, and closed bottoms.

17. The package forming machine in accordance with claim 16 in which said first-mentioned crimping means comprises mechanically complementary rollers positioned in pairs along opposite edges of said strips of material and provided with internal electrical heater elements.

18. A package i'orming machine comprising. means for feeding a plurality of super-imposed layer's'oi packaging material, means for longitudinally sealing together said layers to form a continuous tube-like structure, other means for feeding and operating on said tube-like structure including reciprocatively operated sealing means and severing means, and mechanical means for conjointly operating said sealing and severing means to t seal and sever selected lengths of said tube-like structure.

LEROY L. BAIFIBBERG. 

